230312213031 has 4 divisors (see below), whose sum is σ = 307082950712. Its totient is φ = 153541475352.

The previous prime is 230312213003. The next prime is 230312213081. The reversal of 230312213031 is 130312213032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 230312213031 - 2¹⁸ = 230311950887 is a prime.

It is a super-2 number, since 2×230312213031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230312212989 and 230312213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230312213081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38385368836 + ... + 38385368841.

It is an arithmetic number, because the mean of its divisors is an integer number (76770737678).

Almost surely, 2^230312213031 is an apocalyptic number.

230312213031 is a deficient number, since it is larger than the sum of its proper divisors (76770737681).

230312213031 is an equidigital number, since it uses as much as digits as its factorization.

230312213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76770737680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 230312213031 its reverse (130312213032), we get a palindrome (360624426063).

Subtracting from 230312213031 its reverse (130312213032), we obtain a palindrome (99999999999).

The spelling of 230312213031 in words is "two hundred thirty billion, three hundred twelve million, two hundred thirteen thousand, thirty-one".